Uninstall Transformer Lab

Delete the Transformer Lab application from your /Applications Folder
Transformer Lab stores models and data in your ~/.transformerlab/ folder -- deleting everything there will destroy all your settings and experiments
When downloading large models, Transformer Lab often uses Huggingface's tools which download models to ~/.cache/huggingface/hub delete this directory to remove the large model files
There may be a small folder in ~/Library/Logs/transformerlab/

Here is a script you can run in a Terminal that will do all of the above steps:

rm -rf /Applications/Transformer\ Lab.app/
rm -rf ~/.transformerlab/
rm -rf ~/.cache/huggingface/hub/
rm -rf ~/Library/Logs/transformerlab/

This will remove all the packages installed for Transformer Lab, freeing up space.

Transformer Lab uses uv to install Python packages. You may also want to clear the uv cache. Instructions are below: